My K5 is dieseling when I shut it off.

[badmix]

Its a 305cid w/ 120k on it. It seems to have started when I was monkeying with the carb. But b4 I do anything, I wanna check here and see what ya'll think or recommend. I dont wanna be chasing my tail on this.

1) Could carb cause this? If so, why? And what adjustments should I make , go lean or go rich?

2) Could it be a fluke that it does it when I adj. carb and it is really something else, like timing?

3) If it is timing what is the correct timing for this?

I appreciate any advice, suggestions, help or comments.

 

[Can Can]

When you were "monkeying" with the carb, did you bump up the idle? Too high of an idle causes run-on.......

 

[Leper]

If it started right after you messed with the carb, go un-mess what you just did.

 

[resurrected_jimmy]

Dieseling can be caused by the engine running too hot. Messing with the carb could definitely cause this if you have gone to a lean condition. Carb adjustment in conjunction with checking your timing would probably cure it.

Something that may be helpful to others posting is if you tell us why you were messing with the carb to begin with

 

[badmix]

I was messing with it when I went up to WV this xmas time. The air temps and altitude made the truck run bad. So I monkeyed with it to get it run good up there and then when I got back here I re-monkeyed with it. lol. I used the vacuum gauge approach to adjusting the carb. I guess I need to take my time and monkey some more with it. lol.